Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Near-infrared polarization invisible anti-fake element identification system

An anti-counterfeit element, near-infrared technology, applied in the field of anti-counterfeit element identification system, achieves the effect of compact structure, simple operation, saving manpower and financial resources

Inactive Publication Date: 2014-10-01
NORTHWESTERN POLYTECHNICAL UNIV
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to avoid the deficiencies of the prior art, the present invention proposes a near-infrared polarization stealth anti-counterfeiting component identification system, aiming at the problem of effective, fast and convenient identification of the existing anti-counterfeiting components using near-infrared polarization stealth technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Near-infrared polarization invisible anti-fake element identification system
  • Near-infrared polarization invisible anti-fake element identification system
  • Near-infrared polarization invisible anti-fake element identification system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0040]The technical solution of the embodiment of the present invention mainly includes an infrared diffuse light source module, a polarizer wheel and its control module, a near-infrared sensitive camera image acquisition module, an image processing module and other components.

[0041] The near-infrared diffuse light source is composed of a group of square structure aluminum alloy shell 1, heat sink 2, near-infrared light source 3 and diffusion plate 4, using 850nm near-infrared LED 3 as the near-infrared light source, and placing a diffuser plate in front of the near-infrared light source 3 4, such as image 3 with Figure 4 shown. After the light overlaps in the target area, the coverage area is not less than 210×210mm 2 , used to achieve uniform light irradiation on the anti-counterfeiting element to be tested.

[0042] The polarizer wheel and its control...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a near-infrared polarization invisible anti-fake element identification system which integrates an infrared light source, a polarization sheet, a CCD (Charge Coupled Device) camera and a stepper motor into one system, so as to achieve optical, mechanical and electronic integration. The infrared light source adopts a square indirect lighting mode, infrared ray passes through a diffusion plate to be subjected to scattering to form a bidirectional highly-uniform circular symmetric light field, interference caused by slight different of the surface of an article can be filtered, the rapid gradient change characteristic can be revealed, and due to adoption of the infrared sensitive camera, light of a near-infrared waveband can be effectively identified; the rotation of a polarization rotating disc and the imaging of the camera are synchronized. After the initialization is accomplished, the detection on invisible anti-fake elements can be achieved through only one-key operation, so that the operation is very easy and rapid, the whole system has the advantages of compact structure, small size, rapidness and the like, and the system further has the functions of image filtering, confusion, storage and the like, so that the purposes that the operation is stable and reliable and labor and cost are saved are achieved.

Description

technical field [0001] The invention belongs to an identification system for anti-counterfeit components, in particular to a near-infrared polarization invisible anti-counterfeit component identification system. Background technique [0002] In order to protect articles such as valuable documents and paper, as well as spare parts in the consumer goods sector, pharmaceuticals, textiles or other registered trademarks against imitation and counterfeiting and manipulation, and to be able to detect the authenticity of these articles, they are equipped with specific security elements . The manufacture of anti-counterfeiting elements requires some special substances and pigments, which are not easy to be imitated due to their specific optical properties. Known security elements are watermarks, security threads incorporated in paper, luminescent or magnetic particles, etc., which can be incorporated into printed inks or embossed holograms and then applied as foil elements to the su...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/21
Inventor 赵永强李杰张清勇刘勇
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com